Pipestem liner



J. M. DENNEY PIPESTEM LINER Jan. 16, 1934.

Filed Feb. 1'7. 1931 Patented Jan. 16, 1934 STATES rAsr oFFIce 1 Claim.

My invention relates to absorbent or semi-absorbent, flexible or semi-flexible liners for pipestems, the general idea being to produce a line of pipestem liners which, due to flexibility in ma- 5 terial or construction or both and a number of variations in contour, lengths and sizes, will meet the requirements of pipestems in general use so that a liner may be procured and enjoyed by any personregardless of the particular type of pipestem-he prefers to use. The primary object of my invention is to provide a simple, effective and inexpensive means to prevent the accumulation of residue nicotine upon the inside surface of stems of tobacco pipes and to absorb moisture or saliva from the smokers mouth, preventing its coursing from the mouth of the smoker to the bowl of the pipe to foul the tobacco in the pipe bowl; and in pur- 'suance of this object I have provided a pipestem liner which may be manufactured at low cost and sold at a lowprice so that when a liner becomes clogged or saturated by nicotine or saliva or other impurities, or otherwise rendered ineifective, it economically may be discarded and replaced by a "2 new liner.

Another object of my invention is to provide a' pipestem liner having absorbent qualities which, while protecting the bore of a pipestem from the direct-draft coursing from the pipe bowl to the: smokers mouth and causing the residue nicotine coursing from the ignited tobacco in'the pipe bowl toward the smokers mouth partly tocollect or settle upon the inside surface of the liner and partly to be absorbed within the material of which the liner is constructed, will, atthe sametime, absorb moisture or saliva from the smokers mouth, checking or retarding it in ritscourse toward the pipe bowl.

Still another object of my invention is to provide' a means to prolongthe life or usefulness of a pipestem, and consequently a pipe, which object is attained by means of my pipestem liner which tends toprevent the accumulation of nicotine -upon-the"inside surface of a pipestem and consequently theabsorbing of said nicotine by saidnpipestem and, therefore, tends also to prevent the fouling of a pipestem by nicotine from ignited tobacco-in'the' pipe bowl and renders more usable a pipestem already so fouled.

"Still'another object of my invention is to providea pipestem liner'formed along the lines of a straight'tube which, due to its flexibility in material or construction or both, may be used with either a straight or a crooked or curved pipestem, provided'the 'crook'or curve of the stem. is not 120 abrupt or short, and to provide still other liners having the quality of flexibility in material or construction or both, but formed somewhat along the line of a bend or curve, some of the liners being curved more and some less, said curves not necessarily extending throughout lengths of the liners and being either plain or irregular in formation to meet the requirements in pipestems having dilferently curved formations.

Still another object of my invention is to provide a liner for a special class of pipestems which, being made in one piece, require care to form a liner which easily may be inserted into the bore thereof and easily be removed therefrom; and to attain this object I have provided a form of my pipestem liner so that it Will fit closely to the inside surface of a pipestem throughout a comparatively short portion of the length of the liner and thestem while embodying the features of usefulness and being bound by the general qualifications hereinabove set forth.

With these and other objects in view, my invention consists in a novel and useful liner for pipestems, as in part described in the foregoing and as will be more fully described, explained and illustrated in the course of this specification and in the appended claim and shown in the drawing, inwhich:

Fig. 1 is a longitudinal sectional view of an ordinary tobacco pipe having a stem comprising two sections, one of the sections being integral with the bowl of the pipe, showing my pipestem liner in elevation.

Fig. 2 is a longitudinal sectional view of a pipe like the one'shown in Fig. 1, but with sections of the stem disconnected, showing my pipestem liner in elevation.

Fig. 3 is a longitudinal sectional view of tobacco pipe similar to the pipes shown in Figs. 1 and 2, but having a stem section which is curved upward, the other stem section joining the pipe bowl at an angle different from that shown in Figs; 1 and 2', showing a form of my pipestem liner in elevation.

Fig. 4 is a longitudinal sectional View of an ordinary tobacco pipe which differs from the pipes shown in Figs. 1, 2 and 3 in that the stem is made in one piece, showing a form of my pipestem liner in elevation.

Fig. 5 is a perspective view of a form of my pipestem liner varying only slightly from the form shown in Fig. 4.

The pipes and pipestems shown in Figs. 1, 2, 3 and 4 are of usual construction and, in themelves, form no part of my invention, but are illustrated in a conventional manner in order to show the correct position of my pipestem liner within the bore of a pipestem and to show in part how I apply my invention to various types or classes of pipestems.

Referring to Figs. 1 and 2 of the drawing, the reference numeral 10 represents a pipe bowl having a throat 11 and stem in sections 12 and 12a. The section 12 is made integral with the pipe bowl and has a bore 13 which is somewhat larger than the bore 14 of the stem section 12a, and the stem section 12 is provided with a socket 15 to receive a reduced end 16 of the stem section 12a. In Fig. 1 these stem sections are shown frictionally secured. together, end to end, by the means 15 and 16. A form of my pipestem liner 17 is seen reposing within and along the bores of the stem sections 12 and 12a, in which position it is propelly installed and ready for use. The liner 17 is substantially tube shaped in form, having a cylindrical shell with an opening therethrough. A function of my pipestem liner being to force the draft coursing from the pipe bowl to the smokers mouth to pass through the opening provided in the shell of the liner and to prevent said draft from passing between the inside surface of the pipestem and the outside surface of the liner, the outside surface of the liner must at some point within and along the bore of the pipestem fit closely to the inside surface of the pipestem, and throughout the circumference thereof, to cut off said draft, and it will be noted that such an arrangement of a liner within a pipestem is an important part of my invention. As shown in Fig. l, the outside surface of the liner 1'7 fits closely to the inside surface of the stem section 12a, circumferentially thereof and throughout the length of the bore 14, and being entirely supported upon its mount within the stem section 12a, the liner 17 makes no contact with the stem section 12, yet protrudes within and along the bore 13 of the last-mentioned stem section.

Referring to Fig. 2 of the drawing, the stem sections 12 and 12a are shown separated, showing the form 17 of my pipestem liner in connection with stem section 12a, the free end of the liner projecting rearwardly from the bore 14 of the stem section 12a, and it may readily be seen that when the two stem sections are so separated, the liner 1'7 may be withdrawn from the bore 14 of the stem section 12a by holding the said stem section and pulling upon the free end of the liner. The liner 17 may be inserted into the bores 14 and 13 of the stem sections 12a and 12, respectively, while said stem sections remain connected, as shown in Fig. 1, or the said liner may be inserted into the bore 14 of stem section 12a before assembling the two stem sections, as shown in Fig. 2, and in which event the protruding end of the liner will be projected into the bore 13 of stem section 12 in the operation of assembling these stem sections. It is to be noted that the form 1'7 of my pipestem liner, being substantially the form of a straight tube, is particularly well adapted for use with straight pipestems, yet, due to its flexibility, it may be used also with pipestems formed along the line of a slight curve.

Referring to Fig. 3 of the drawing, the reference numeral 18 represents a pipe bowl having a throat l9 and a stem section 20 protruded forwardly and upward from the pipe bowl, said stem section being integral with the pipe bowl and having a bore 21 and having also a socket 22 to receive a reduced end 23 of the stem section 2011 which is curved upon the line of an irregular curve, the bore 24 thereof being similarly curved, and within and along the bores 21 and 24 reposes a form of my pipestem liner 25. It is obvious that if a liner formed, generally, as a straight tube, as shown at 17, should be inserted into the bore of a very crooked stem, as shown at 24, difiiculty would be experienced due to friction resulting from the operation thereof, and, therefore, to avoid such difficulty I have, in applying my invention to the requirements met with in pipestems having rather abrupt or short curved formations, provided a form of my invention, seen in the liner 25, which in the absence of restraining influences may be so viewed as to present a curved contour; and it will be noted that I have provided still other forms of pipestem liners which in the absence of restraining influences may be so viewed as to present curved contours other than that shown in the liner 25, said other forms, for the sake of brevity, not being shown in the drawing.

A further application of my invention is illustrated in Figs. 4 and 5 of the drawing.

Referring to Fig. 4 of the drawing, the reference numeral 26 represents the bowl of a pipe different in construction from the pipes shown in Figs. 1, 2 and 3, the stem 2'7 thereof being a single piece and the pipe bowl being provided with an opening 28 near the bottom thereof to receive an end of the stem, said stem being provided with a bore 29, said bore being of one diameter throughout the length of the stem. It is to be noted that the stem 27, being in one piece,

cannot be taken apart and re-assembled as may.

be done with the pipestems shown in Figs. 1, 2 and 3, and that, consequently, after a liner has been placed fully within the bore 29, it cannot be pulled out of said bore by aid of the fingers alone as may be done with a liner when it is used.

with a pipestem made in sections that may be taken apart or separated, and that, such being true, it will require special means for removal of a liner. Any slender instrument, such as a small rod or wire, will be found adequate for this,

purpose if a liner be not fitted too tightly within a bore. It being an important part of my invention, however, that the outside surface of the shell of my liner be fitted closely to the inside surface of a pipestem and circumferentially of the same at some point along the bore of the stem to cut off the draft, as has been hereinabove explained, I have provided a form of my invention as seen in the liner 30, said liner being substantially the shape of a tapered tube; and it readily may be seen that a liner so formed may be projected into such a bore as that shown at 29 and extracted therefrom with greater ease than could a liner formed as a straight tube, and it may be seen, further, that the larger end of a liner so formed may be fitted within the bore of a pipestem in such a manner that the outer circumference of the said larger end will be pressed against the inside surface of the pipestem and along a sufficient portion of the length of the stem and the liner and with suificient force to compel the draft coursing from the pipe bowl to the smokers mouth to pass within and through the opening provided through the shell of the liner, as shown at 30a in Fig. 4.

Referring to Fig. 5 of the drawing, the reference numeral 31 represents a liner which like the liner 30 is designed to be with ease inserted into the long, small bore of a one-piece pipestem, but instead of having a gradual taper as seen along a line 30a and 30b in the liner 30, the liner 31 is provided With an enlarged end 3111, said enlarged end being abruptly reduced at 31b. It is obvious that either the form 30 or the form 31 of my invention will effectively remove the difficulty encountered in inserting a liner into the bore of a long, one-piece pipestem and also the removal of same therefrom. Also, it is obvious that a number of variations in form, as, for in stance, providing the form 31 with a gradual or sloping shoulder at 31?) instead of an abrupt shoulder as shown in Fig. 5, may be produced without affecting the usefulness of the liner with reference to functions of the same hereinabove explained, and, an object of my invention being to provide a low-priced pipestem liner which economically may be used, discarded and replaced by a new liner, it is to be understood that in pursuance of said object I may manufacture a liner in any form herein set forth or suggested without departing from the spirit of my invention. And it is obvious that my invention applies in connection with stems of cigar holders and cigarette holders with equally advantageous results as may be obtained when the invention is used with or applied to pipestems.

It will be apparent that I have devised a novel and useful construction which embodies the features of advantages enumerated as desirable, and while I have in the present instance shown in various forms and described the preferred embodiment thereof, it is to be understood that I do not restrict myself to the details in construction, material and arrangement, as the same are susceptible to modification so that it is my intention to cover by my claim such changes as reasonably may be included within the scope thereof.

I claim as my invention:

The combination with a single piece stem for pipes and like smoking implements of a liner extending from the outer end of the stem inwardly toward its opposite end, said liner comprising a single flexible tube tapered to a somewhat smaller diameter toward the end opposite the outer end, the liners outer end forming a draft seal with the stem at that point.

JOHN M. DENNEY. 

